Home / 821,724.35-1,134,706.72-512,155.25

Finding the Fourth Proportional to 821,724.35, 1,134,706.72 and 512,155.25

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Solution

The fourth proportional to 821,724.35, 1,134,706.72 and 512,155.25 is: 707,227.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,724.35 : 1,134,706.72 = 512,155.25 : x
  2. Step 2: Convert to fraction form
    821,724.35/1,134,706.72 = 512,155.25/x
  3. Step 3: Cross multiply
    821,724.35x = 1,134,706.72 × 512,155.25
  4. Step 4: Simplify right side
    821,724.35x = 581,146,007,062.09
  5. Step 5: Solve for x
    x = 581,146,007,062.09/821,724.35
  6. Step 6: Final answer
    x = 707,227.44

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.